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Storing Ionized Water: Which Container, Glass or Plastic?

Published by Alkaline Water Plus

I recently did a series of tests to determine …

Which Container is Best for Storing Ionized Water?

I often get this question from my water ionizer customers, and have been working on discovering the very best methods of storing ionized water for a while now. So far, I’ve discovered that leaving no gap of air inside the container makes a huge difference in the ability to store ionized water and retain the ORP [antioxidant value], which usually escapes in just a few hours of storage. Also, glass appears to be the best container for retaining the ORP and pH values of the ionized water the longest.

The three containers I used in this trial were: 1) a glass jar [the kind used for jamming], 2) a plastic, BPA free, jar with a pull-type top, and 3) a dark, plastic, BPA-free container with a flip-type spout.  The water ionizer I used was the Jupiter Athena water ionizer.

The videos are all posted here in order. Beginning/pouring note: I filled each container to the brim in attempts to have no air-gap in the bottle at all. The second container was impossible to do this completely because of the cap design. I tested them at different intervals and have posted the results, below, on a chart for your easy reference.

<

Ionized WaterFrom Athena Water Ionizer

Glass

Plastic

Pull-Top

Plastic

Flip-Top

2/19 After Pouring

9.7/-774

2/20 17 Hours Later

9.8/-605

10.1/-390

9.4/-303

2/20 After Pouring

9.9/-764

2/20 2 Hours Later

10.6/-775

10.6/-724

10.6/-385

Conclusions: The glass jar is best for storing ionized water, however if you’re drinking the water within a couple of hours, using a plastic, bpa-free, container filled to the brim is good too. The flip-top lid appears to be a bad design for retaining ORP. So avoid lids that have a way for gas to escape.

Cathleen LoGrasso

Cathleen LoGrasso

Cathleen LoGrasso is the founder of Alkaline Water Plus, an educator, and author focused on hydration, nutrition, and lifelong wellness.

She holds a Master’s degree in Education with a background in physiological and biological sciences, and spent over 25 years as a teacher and principal.

For nearly 30 years, she has studied and personally used water ionizers, combining scientific research, independent testing, and real-world experience to help others make informed decisions about water quality and health.

She is also the author of Whole Foods and Water for Life and Nutritional Weight Loss, sharing practical guidance on healthy living.

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